CNFET Based Voltage Multiplier Circuit for RF Energy Harvesting Applications

2015 ◽  
Author(s):  
Vikash Kumar ◽  
Aminul Islam
Keyword(s):  
Energy Harvesting ◽  
Rf Energy Harvesting ◽  
Voltage Multiplier ◽  
Rf Energy ◽  
Multiplier Circuit

A Multiband RF Energy Harvesting System for Efficient Power Conversion

2020 ◽  
Author(s):  
M. Shafiqur Rahman ◽  
Uttam K. Chakravarty
Keyword(s):  
Energy Harvesting ◽  
Impedance Matching ◽  
Power Conversion ◽  
Load Resistance ◽  
Mathematical Programming Problem ◽  
Rf Energy Harvesting ◽  
Voltage Multiplier ◽  
Overall Efficiency ◽  
Rf Energy ◽  
Multiplier Circuit

Abstract This paper presents a radio frequency (RF) energy harvesting (RFEH) system with a multiband antenna configuration that can simultaneously harvest energy from the sub-6 GHz and 5G millimeter-wave (mm-Wave) frequency bands. The performance of the RFEH system is studied from −25 dBm to 5 dBm input power levels underlying the maximization of the overall efficiency and possible optimization strategies. The maximum achievable power conversion efficiency (PCE) is formulated as a mathematical programming problem and solved by optimizing the design factors including antenna geometry, operational frequencies, rectifier topologies, and rectifier parameters. An array of broadband high gain patch antennas with reconfigurable rectifiers, an impedance matching network, and a voltage-multiplier circuit are employed in the system to maximize the PCE. The voltage standing wave ratio (VSWR) and reflection coefficient (S11) of the antenna are estimated and optimized by numerical method. Simulations are conducted to evaluate the performances of the rectenna and the voltage-multiplier circuit. Results for radiation pattern, wave absorption, input impedance, voltage, and power across the load resistance as a function of frequency are obtained for the optimized configuration. The overall efficiency of the optimized RFEH system is measured at various power inputs and load resistances.

Efficiency enhanced voltage multiplier circuit for RF energy harvesting

2016 ◽  
Vol 48 ◽  
pp. 95-102 ◽  
Author(s):  
Shailesh Singh Chouhan ◽  
Marko Nurmi ◽  
Kari Halonen
Keyword(s):  
Energy Harvesting ◽  
Rf Energy Harvesting ◽  
Voltage Multiplier ◽  
Rf Energy ◽  
Multiplier Circuit

scholarly journals Power Conversion Using Analytical Model of Cockcroft-Walton Voltage Multiplier Rectenna

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 881
Author(s):  
Esraa Mousa Ali ◽  
Nor Zaihar Yahaya ◽  
Omar Aqeel Saraereh ◽  
Anwar Hamdan Al Assaf ◽  
Bilal Hasan Alqasem ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Maximum Output Power ◽  
Input Power ◽  
Maximum Efficiency ◽  
Design System ◽  
Maximum Output ◽  
Rf Energy Harvesting ◽  
Current Output ◽  
Voltage Multiplier ◽  
Rf Energy

A voltage multiplier rectenna is a combination of a voltage multiplier rectifier and an antenna used for the conversion of AC to DC. It is an essential part of the system of RF energy harvesting. Conventional rectennas are characterized by low conversion efficiency. This study presents an analytical novel mode designed for RF energy harvesting systems to study the voltage and current output of rectifier stages for efficiency optimization. The design contains a voltage multiplier rectification circuit with seven stages. The Schottky diode HSMS 285-C was selected for the circuit modeling voltage multiplier circuit. Advanced Design System (ADS) simulation was used to validate the equations of the theoretical model solved with MATLAB code. The fabricated system was tested for an input power range of 10 μW to 100 mW; the maximum output power is 0.2577 mW with maximum efficiency of 29.85%.

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